diff options
| author | Tom White <weiss@jade.(none)> | 2008-09-29 18:23:46 +0100 |
|---|---|---|
| committer | Thomas White <taw27@cam.ac.uk> | 2008-10-02 17:56:45 +0100 |
| commit | f6a8e7ef02e6f449c2c3aa6186bf10d81c127dd3 (patch) | |
| tree | 80bce3620f8823e15a00db4b1165101a2a933c86 /src/imagedisplay.c | |
| parent | d200349cad19fa80947b441711cc36685a974aa2 (diff) | |
Add a scale bar to the diffraction patterns
Diffstat (limited to 'src/imagedisplay.c')
| -rw-r--r-- | src/imagedisplay.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/imagedisplay.c b/src/imagedisplay.c index 4ca46a5..b6de26a 100644 --- a/src/imagedisplay.c +++ b/src/imagedisplay.c @@ -23,6 +23,7 @@ #include "imagedisplay.h" #include "utils.h" +#include "mapping.h" /* Free pixbuf data when reference count drops to zero */ static void imagedisplay_free_data(guchar *image_eightbit, ImageDisplay *imagedisplay) { @@ -167,6 +168,33 @@ void imagedisplay_close(ImageDisplay *imagedisplay) { } } +static void imagedisplay_add_scalebar(ImageDisplay *imagedisplay, GtkWidget *drawingarea, + double scale, double xoffs, double yoffs) { + + PangoLayout *layout; + double sb; + PangoRectangle rect; + int bwidth, bheight; + int view_height = imagedisplay->view_height; + + sb = mapping_scale_bar_length(&imagedisplay->imagerecord); + layout = gtk_widget_create_pango_layout(drawingarea, "1 nm^-1"); + pango_layout_get_pixel_extents(layout, &rect, NULL); + + bwidth = (sb*scale)+20; + bheight = rect.height+30; + if ( rect.width > bwidth ) bwidth = rect.width+20; + gdk_draw_rectangle(drawingarea->window, drawingarea->style->bg_gc[GTK_WIDGET_STATE(drawingarea)], TRUE, + xoffs+20, yoffs+view_height-20-bheight, + bwidth, bheight); + gdk_draw_line(drawingarea->window, drawingarea->style->fg_gc[GTK_WIDGET_STATE(drawingarea)], + xoffs+30, yoffs+view_height-30, + xoffs+30+(scale*sb), yoffs+view_height-30); + gdk_draw_layout(drawingarea->window, drawingarea->style->fg_gc[GTK_WIDGET_STATE(drawingarea)], + xoffs+30, yoffs+view_height-20-bheight+10, layout); + +} + #define imagedisplay_draw_line(gc,x1,y1,x2,y2) (gdk_draw_line(drawingarea->window,gc, \ xoffs+(x1), yoffs+imagedisplay->view_height-1-(y1), \ xoffs+(x2), yoffs+imagedisplay->view_height-1-(y2))) @@ -202,6 +230,9 @@ static gboolean imagedisplay_redraw(GtkWidget *drawingarea, GdkEventExpose *even * tan(imagedisplay->imagerecord.omega)) * scale); } + /* Add scale bar */ + imagedisplay_add_scalebar(imagedisplay, drawingarea, scale, xoffs, yoffs); + /* NB This calls the function above, which sorts out stuff */ if ( imagedisplay->flags & IMAGEDISPLAY_SHOW_CENTRE ) { imagedisplay_draw_line(imagedisplay->gc_centre, |